endurance

As an adjective steadfast

is fixed or unchanging; steady.

As a noun endurance is

the measure of a person's stamina or persistence.

As a noun endurance

is the measure of a person's stamina or persistence.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between end and endurance

is that end is a key that when pressed causes the cursor to go to the last character of the current line while endurance is the measure of a person's stamina or persistence.

Relinquisment is a related term of endurance.

As a noun endurance is

the measure of a person's stamina or persistence.

Endurance is a related term of bravery.

As nouns the difference between endurance and bravery

is that endurance is the measure of a person's stamina or persistence while bravery is (usually|uncountable) being brave, courageousness.

As a noun endurance

is the measure of a person's stamina or persistence.

As a proper noun excellence is

a title of honor or respect; more common in the form excellency.

As an adjective endurant

is capable of enduring fatigue, pain, hunger, etc.

As a noun endurance is

the measure of a person's stamina or persistence.

Endurance is a related term of permission.

As nouns the difference between endurance and permission

is that endurance is the measure of a person's stamina or persistence while permission is authorisation; consent (especially formal consent from someone in authority).

Surrender is a related term of endurance.

As nouns the difference between surrender and endurance

is that surrender is an act of surrendering, submission into the possession of another; abandonment, resignation while endurance is the measure of a person's stamina or persistence.

As a verb surrender

is to give up into the power, control, or possession of another; specifically (military) to yield (a town, a fortification, etc) to an enemy.

Endurance is a related term of misery.

As nouns the difference between endurance and misery

is that endurance is the measure of a person's stamina or persistence while misery is great unhappiness; extreme pain of body or mind; wretchedness; distress; woe.